Mazda promotes the efficient use of energy while aiming to reduce CO2 emissions in the area of manufacturing.
The total CO2 emissions from Mazda's four principal domestic plants*1 (including R&D and other indirect areas) in FY March 2013 was reduced by 51.1% compared with FY March 1991 levels due to the following measures.
- Further Implementation of Monozukuri Innovation*2
- Improvements in overall facility operating efficiency
- Concentrating production and reducing losses from unnecessary work and equipment downtime
- Total CO2 emissions from Mazda's four principal domestic plants reduced by 51.1% (449,000tons - CO2)
- Emissions per unit of sales revenue reduced by 50.8% (20.3 t-CO2/100 million yen)
- *1Head Office (Hiroshima); Miyoshi Plant; Hofu Plant, Nishinoura District; Hofu Plant, Nakanoseki District
- *2 For details, see the Annual report(pp.13,16,17)
|Fuel oil A||596||43||46||69||32||20|
|Fuel oil B||11||0||0||0||0||0|
|Fuel oil C||1,168||81||91||81||60||36|
In line with its efforts to satisfy diverse customer needs and attract many customers by manufacturing vehicles that embody the "Sustainable Zoom-Zoom", Mazda is working to dramatically improve its business efficiency by increasing product development/manufacturing efficiency. At present, product development, manufacturing and purchasing devisions/departments are jointly working on "Monotsukuri innovation," sharing a completely new concept to offer diverse vehicle models to the market.
Through these efforts, Mazda has introduced various new models equipped with SKYACTIV TECHNOLOGY, which has resulted in substantial reduction of per-unit energy consumption in manufacturing processes. Specifically, the use of thinner parts, enabling reduced material weights and cycle time, and the modification of production methods, contributed to reduced energy consumption. Also, full introduction of the Aqua-Tech Paint System, a new water-based painting technology, has enabled elimination of the primer process, resulting in reduced energy use for air conditioners in painting booths.
Improving the facility operation rate, shortening cycle time, and other measures are being taken to optimize the line process as well as the entire manufacturing process.
Also, losses in each step from production to consumption of energy are reanalyzed to further cut losses.
1. Cutting losses during energy production
Activities to minimize energy conversion losses in compressors, boilers, etc. that produce compressed air and steam are promoted.
2. Cutting losses during energy supply
Activities to prevent losses from pressure, heat release and electrical resistance are promoted to minimize energy losses while transporting compressed air, steam, electricity, etc.
3. Cutting losses during non-operating times
Energy consumption is reduced by suspending the power supply during breaks, between shifts, and before and after work hours when the facility is not operating. In addition, the power supply is frequently suspended during very short non-operating periods within work hours to further cut losses.